Earth, Moon, and Planets

, Volume 92, Issue 1–4, pp 43–48 | Cite as

The Scattered Disk Population and the Oort Cloud

  • Julio A. Fernández
  • Tabaré Gallardo
  • Adrián Brunini


The trans-Neptunian belt has been subject to a strong depletion that has reduced its primordial population by a factor of one hundred over the solar system's age. One by-product of such a depletion process is the existence of a scattered disk population in transit from the belt to other places, such as the Jupiter zone, the Oort cloud or interstellar space. We have integrated the orbits of the scattered disk objects (SDOs) so far discovered by 2500 Myr to study their dynamical time scales and the probability of falling in each of the end states mentioned above, paying special attention to their contribution to the Oort cloud. We found that their dynamical half-time is close to 2.5 Gyr and that about one third of the SDOs end up in the Oort cloud.


Solar System Dynamical Time Oort Cloud Interstellar Space Strong Depletion 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Kluwer Academic Publishers 2003

Authors and Affiliations

  • Julio A. Fernández
    • 1
  • Tabaré Gallardo
    • 1
  • Adrián Brunini
    • 2
  1. 1.Departamento de Astronomii aFacultad de CienciasMontevideoUruguay
  2. 2.Facultad de Ciencias Astronómicas y Geofí sicasUniversidad de La PlataLa PlataArgentina

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